Toyota Sienna Service Manual: Wiper switch
COMPONENTS

REMOVAL
1. REMOVE STEERING COLUMN COVER
2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY

- Disconnect the connector.
- Using a screwdriver, disengage the claw and pull
out the windshield wiper switch assembly.
NOTICE:
The claw will be broken if pressed hard.
HINT:
Tape up the screwdriver tip before use.
INSPECTION
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

- Continuity Check
- Check the continuity between each of the
terminals of the connector.
Standard:
Front Wiper Switch

Front Washer Switch

Rear Wiper Switch

Rear Washer Switch

- Intermittent Operation Check
- Connect the voltmeter (+) terminal to the
terminal 7 (+1) of the connector, the voltmeter
(-) terminal to the terminal 2 (EW) of the
connector.
- Connect the battery (+) to the terminal 17 (+B)
of the connector, the battery (-) to the terminal 2
(EW) and the terminal 16 (+S) of the connector.
- Turn the wiper switch into the INT position.
- Connect the battery (+) to the terminal 16 (+S)
of the connector for 5 seconds.
- Connect the battery (-) to the terminal 16 (+S)
of the connector. Operate the intermittent wiper
relay and check voltage between the terminal 7
(+1) and the terminal 2 (EW).

- Operation Check (Front Wiper)
- Turn the wiper switch into the OFF position.
- Connect the battery (+) to the terminal 17 (+B)
of the connector, the battery (-) to the terminal
16 (+S) and 2 (EW) of the connector.
- Connect the voltmeter (+) terminal to the
terminal 7 (+1) of the connector, the voltmeter
(-) terminal to the terminal 2 (EW) of the
connector. Turn the washer switch ON and
OFF and check voltage between the terminal 7
(+1) and the terminal 2 (EW).

INSTALLATION
1. INSTALL WINDSHIELD WIPER SWITCH ASSEMBLY
2. REMOVE STEERING COLUMN COVER
COMPONENTS
REMOVAL
1. REMOVE REAR WIPER BLADE ASSEMBLY
Remove the rear wiper arm head cap from the rear
wiper arm.
Raise the rear wiper blade to the position as shown
i ...
ON-VEHICLE INSPECTION
1. INSPECT FRONT WASHER MOTOR
Operation Check
Pour the water into the washer jar with the
windshield washer motor and pump installed to
the washer ...
Other materials:
Disassembly
1. REMOVE CONTROL KNOB SUB-ASSEMBLY (for Manual Air Conditioning System)
(a) Remove the control knob sub-assembly.
2. REMOVE AIR CONDITIONING CONTROL BULB
(a) Remove the air conditioning control bulb.
Reassembly
1. INSTALL AIR CONDITIONING CONTROL BULB
2. INSTALL CONTROL KNOB SUB-ASSEM ...
Engine immobilizer
system
The vehicle’s keys have built-in transponder chips that prevent
the engine from starting if a key has not been previously registered
in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prevent vehicle the ...
Removal
1. Disconnect cable from negative battery
terminal
2. REMOVE STEERING COLUMN COVER LOWER
(A) insert the key into the ignition key cylinder and
release the steering lock.
(B) turn the steering wheel clockwise to gain access to
the screw and remove the screw.
(c) Turn the steering whe ...